What are the disadvantages of drinking garlic?

Is Garlic Always Good for You? The Side Effects You Should Know

Garlic is celebrated for its health benefits—antibacterial properties, heart support, immune boosting—but it’s not without its drawbacks. While it’s generally safe when consumed in moderation, especially over the short term, regular or excessive intake can lead to unpleasant side effects. Many people don’t realize that something as natural as garlic can come with warnings.

One of the most common complaints? Bad breath—unsurprisingly. But that’s just the start. Some experience heartburn, gas, or even diarrhea, especially when eating raw garlic. Raw cloves are more potent than cooked ones, so while tossing a chopped clove into your salad might seem healthy, it could leave you feeling bloated or uncomfortable.

Another concern is garlic’s effect on blood clotting. It has natural compounds that can increase the risk of bleeding. This matters most for people on blood thinners or those heading into surgery. Even topical use or supplements might pose a risk if not discussed with a healthcare provider.

And while rare, allergic reactions to garlic do happen. Symptoms can range from skin rashes to more serious responses, particularly in people with existing sensitivities to plants in the allium family (like onions or leeks). Long-term use—up to seven years—has been studied with no major red flags, but consistency doesn’t mean immunity to side effects.

The bottom line? Garlic can be a healthy addition to your diet, but moderation is key. If you’re consuming it daily—especially raw—or taking supplements, it’s worth considering these downsides. As with any potent natural remedy, respect its power and know your body’s limits.